ui/aura/client/capture_delegate.h

   1 // Copyright (c) 2012 The Chromium Authors. All rights reserved.
   2 // Use of this source code is governed by a BSD-style license that can be
   3 // found in the LICENSE file.
   4
   5 #ifndef UI_AURA_CLIENT_CAPTURE_DELEGATE_H_
   6 #define UI_AURA_CLIENT_CAPTURE_DELEGATE_H_
   7
   8 #include "ui/aura/aura_export.h"
   9
  10 namespace aura {
  11 class Window;
  12 namespace client {
  13
  14 // This interface provides API to change the root Window's capture state without
  15 // exposing them as RootWindow API.
  16 class AURA_EXPORT CaptureDelegate {
  17  public:
  18   // Called when a capture is set on |new_capture| and/or a capture is
  19   // released on |old_capture|.
  20   // NOTE: |old_capture| and |new_capture| are not necessarily contained in the
  21   // window hierarchy of the delegate.
  22   virtual void UpdateCapture(aura::Window* old_capture,
  23                              aura::Window* new_capture) = 0;
  24
  25   // Called when another root gets capture.
  26   virtual void OnOtherRootGotCapture() = 0;
  27
  28   // Sets/Release a native capture on host windows.
  29   virtual void SetNativeCapture() = 0;
  30   virtual void ReleaseNativeCapture() = 0;
  31
  32  protected:
  33   virtual ~CaptureDelegate() {}
  34 };
  35
  36 }  // namespace client
  37 }  // namespace aura
  38
  39 #endif  // UI_AURA_CLIENT_CAPTURE_DELEGATE_H_